Improvement in furnaces for salt-boiling



gaat etna,

WILLIAM JAMES DODGE, or sYRAoUsE, Nawv YORK.

Letters Patent N0.f105,78`6, dated July 26,1870.

IMPnOvEMENT INHI'URNAQES non senr-Bourne. v

The `schedule referred to in these Iiettezs Patent and making part 'ot' the Vsax-no..

To all whoni ,it may concern: 4 l l Beit known `that l, `WILLIAM JAMES Donau, of Syl-acuse, in the county of Onondaga and 'State of New York, have invented a newand `improved Furnace for Salt-Boiliug,`&c.; and I do hereby declare that the following is a full, clear, and exact description thereof', which will enable thoseA skilledin the art to make "a'nil use the same, reference being had to the accompanying draining forming .part of this speci* iicatioln in whichy Figure-luisa sectionalview-of Athesamewith .my improvements.- y

v "Sixpilar letterspof reference indicate like parts.

My'iurentiorfi consists in constructing the side wallsv of Vmy arch hollow, with openings at the rear ends for the admission f. cold air, regulated by dalnpers, and at thefront ends, beneath the tire-grate, for the admission aludisupply of the `same tbrthe're, theopenings to` thefash-pit being closed by dampers or drop, as desired, thus causingthe draught of air for the Ifire to come through the walls.

l then, forthe purpose of distributing the heated air and `gases equallythrough the length of the arch,

`thus bringing the sameilrcontact withy the kettles, or

other apparatus used for holding the liquids to be boiled o r evaporated; at `different points, without loss byradrationor absorption through the arch walls, divide thebrdinary` airior draught-chamber Yinto sec- "tions,as many as shall- 'be desired, by partitions, of any suitable material,` havingl adjustable'dampeis, atV

andaeross the upper part, to regulate the draught through each. l `Iconstrnct 'as large an` independent iiue, made circular, with onefilat side, to rest the same upon, on the hearth, as' can be readily placed within the ar`chnot coming in contact with any portion ofthe same, eztcept the hearth upon'which it rests. w-

` Tlf `fiueI make ofmaterals to withstand heat,

and in short sections, so as' to be ,easily handled andv placed, the'eud of one section butting against the next, thus lforming a continuous ue. 4 1 place one end of this fine immediately backofthe .,re, and oontinuethe same to the rst partition, and

very slight costi through the same, discharging its contents behind the same, and into the second section.l V Iffmore sections are used I insert a smaller iiue'in the rear end of' the first, thus continningthe draught to. the third section,and repeat the same as oftenas desired.

In the accompanying drawing- 1 A A are the sidewalls o l'rthe arclnhollow.

B is the opening in same for cold air.

mission ot' air to fire.-

D, ash-pit. E, frate@ F, hearth. g g g,kettle`s. Y H, independent line.,` sg I, partition. L

1x x, damper in partition and opening.v Y By these 'means all loss byradiation. through the side walls is saved, and ythe heatis .utilized and dis tributed `as desired, thus producing much greater results from the fuel, andeconomy iu manufacture, at a 2O 0 are t-he openings beneath the lire-grate for ad,-

' What vI claim, and-desire to secure by Letters Patent, is-' Y C 1. The ne H,placed"in 'the rear of'` the combustion-chamber or grate E, and so 'arranged as to' convey a portion of the heated gases from the furnace E to the rear kettles, withoutvsaid heated gases coming in contact with the front kettles g orthe side walls A' A, while on the way from the furnace to said rear ket' ties, thereby 'distributing the :heat to the series of kettles more evenly, a`s"speciiied. v

2.= Therhollow walls A. A,\vithports B andC, fur-` nace E,idistributing'llu e H, and stop wall I, with regulatingdamper a: and kettles y, all constructed and arranged as hereinrfshown and described, and furtheA .purpose specified. n

l Theabovespecilication ofgmy invention signed by *meV this 27th day ol"April, `1870. 'i

WM. JAMES DODGE. Witnesses: g

A. Mommy, p SAMLDUNoAm 

